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We have an application that has the following architecture:
-IIS
-WCF RIA Services.
-Silverlight client
-We log on both the client and the server and use Clog to send the logs from
the client
My issue is with our server logs. Whenever log4net logs the threadId, it
seems to be the same until something big happens (i.e. IIS Reset). So the
log file looks like this even though these are two users hitting it at the
same time.
Server: 02/05/2013 18:16:16, GMT-05:00, ThreadId:179, , TestUser3,
Debug,Currently logged in as TestUser3
Server: 02/05/2013 18:16:16, GMT-05:00, ThreadId:179,
uo2sexbeikaej0hpwoiylxxz, TestUser3, Debug,Initializing
UserManagementDomainService
Server: 02/05/2013 18:16:16, GMT-05:00, ThreadId:179,
uo2sexbeikaej0hpwoiylxxz, TestUser3, Debug,[UserManagementDomainService]
running query [GetUserManagementCacheData] Thread[146] Instance[New]
Server: 02/05/2013 18:16:16, GMT-05:00, ThreadId:179, , , Debug,"Begin
[/Services/TheApplicationSys-RC-Client-RIA-Models-Services-SettingsDomainService.svc/Soap]
Type=Service,IP=::1"
Server: 02/05/2013 18:16:16, GMT-05:00, ThreadId:179, , TestUser6,
Debug,Currently logged in as TestUser6
Server: 02/05/2013 18:16:16, GMT-05:00, ThreadId:179,
u5avnhurwzctmzrep1sxafw1, TestUser6, Debug,Initializing
SettingsDomainService
Server: 02/05/2013 18:16:16, GMT-05:00, 149, u5avnhurwzctmzrep1sxafw1,
TestUser6, GetUserDictionary, [PROFILING], 11,
5001fe21-7d56-4719-89af-510674543765,
Server: 02/05/2013 18:16:16, GMT-05:00, ThreadId:179, , TestUser6,
Debug,"End
[/Services/TheApplicationSys-RC-Client-RIA-Models-Services-SettingsDomainService.svc/Soap]
Type=Service,IP=::1,Page=TheApplicationSys-RC-Client-RIA-Models-Services-SettingsDomainService.svc;Duration=11.670ms,User=TestUser6"
Server: 02/05/2013 18:16:16, GMT-05:00, ThreadId:179, , , Debug,"Begin
[/Services/TheApplicationSys-RC-Client-RIA-Models-Services-FeatureLicenseDomainService.svc/Soap]
Type=Service,IP=::1"
Server: 02/05/2013 18:16:16, GMT-05:00, ThreadId:179, , TestUser6,
Debug,Currently logged in as TestUser6
Server: 02/05/2013 18:16:16, GMT-05:00, ThreadId:179,
u5avnhurwzctmzrep1sxafw1, TestUser6, Debug,Initializing
FeatureLicenseDomainService
Once something happens, the thread ID changes and is then consistently that
number. Looking through our code, we don't explicitly set the threadID, so
it has to coming form Log4net. There is nothing that would lead us to
believe that our application is actually single threaded. We are setup for
“Single” ConcurrencyMode and “PerSession”, which means that every unique
client may get a new thread. We run some fairly heavy load tests and can
see what looks very much like parallel activity. I've looked at our log
files for very busy environments (production, QA, etc.) and they all seem to
behave the same. So at this point, it feels like a logging issue and not a
threading issue.
Has anybody seen this or have a solution?
The appender is as follows:
<appender name="ServerFileAppender"
type="log4net.Appender.RollingFileAppender">
<file value="Log\TheApplication.log" />
<appendToFile value="true" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<maxSizeRollBackups value="2" />
<rollingStyle value="Size" />
<maximumFileSize value="10MB" />
<countDirection value="1"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%property{logId}: %date{dd/MM/yyyy
HH:mm:ss}, %property{timeZoneOffset}, ThreadId:%t, %property{sessionId},
%property{userName}, %property{level},%message%newline" />
</layout>
</appender>
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